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目的了解某市二次供水水质卫生状况,为卫生监督管理提供科学依据。方法依据《生活饮用水标准检验方法》(GB/T 5750-2006),对某市2012年—2015年二次供水水样进行采样、检测与评价。结果某市4年来共检测二次供水水样1 566份,合格1 008份,合格率为64.4%。各年的水质合格率分别为55.9%、62.7%、75.5%和61.5%。检测指标中以游离余氯合格率最低,为69.0%。结论某市二次供水的水质合格率偏低,应加强监督管理,提高水质卫生,保障饮用水安全。
Objective To understand the status of secondary water supply and sanitation in a city and provide a scientific basis for health supervision and management. Methods Based on “Standard Test Method for Domestic Drinking Water” (GB / T 5750-2006), the secondary water supply samples from 2012 to 2015 in a city were sampled, tested and evaluated. Results In the past four years, a total of 1 566 secondary water samples were obtained from a city, with a passing rate of 1,008 and a pass rate of 64.4%. The passing rate of water quality in each year was 55.9%, 62.7%, 75.5% and 61.5% respectively. Test indicators to free residual chlorine pass rate of the lowest, 69.0%. Conclusion The passing rate of secondary water supply in a certain city is low, and supervision and management should be strengthened to improve the hygiene of drinking water and ensure the safety of drinking water.